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" Test binding arguments to a Funcref.
func MyFunc(arg1, arg2, arg3)
return a:arg1 . '/' . a:arg2 . '/' . a:arg3
endfunc
func MySort(up, one, two)
if a:one == a:two
return 0
endif
if a:up
return a:one > a:two ? 1 : -1
endif
return a:one < a:two ? 1 : -1
endfunc
func Test_partial_args()
let Cb = function('MyFunc', ["foo", "bar"])
call Cb("zzz")
call assert_equal("foo/bar/xxx", Cb("xxx"))
call assert_equal("foo/bar/yyy", call(Cb, ["yyy"]))
let Cb2 = function(Cb)
call assert_equal("foo/bar/zzz", Cb2("zzz"))
let Cb3 = function(Cb, ["www"])
call assert_equal("foo/bar/www", Cb3())
let Cb = function('MyFunc', [])
call assert_equal("a/b/c", Cb("a", "b", "c"))
let Cb2 = function(Cb, [])
call assert_equal("a/b/d", Cb2("a", "b", "d"))
let Cb3 = function(Cb, ["a", "b"])
call assert_equal("a/b/e", Cb3("e"))
let Sort = function('MySort', [1])
call assert_equal([1, 2, 3], sort([3, 1, 2], Sort))
let Sort = function('MySort', [0])
call assert_equal([3, 2, 1], sort([3, 1, 2], Sort))
endfunc
func MyDictFunc(arg1, arg2) dict
return self.name . '/' . a:arg1 . '/' . a:arg2
endfunc
func Test_partial_dict()
let dict = {'name': 'hello'}
let Cb = function('MyDictFunc', ["foo", "bar"], dict)
call assert_equal("hello/foo/bar", Cb())
call assert_fails('Cb("xxx")', 'E492:')
let Cb = function('MyDictFunc', ["foo"], dict)
call assert_equal("hello/foo/xxx", Cb("xxx"))
call assert_fails('Cb()', 'E492:')
let Cb = function('MyDictFunc', [], dict)
call assert_equal("hello/ttt/xxx", Cb("ttt", "xxx"))
call assert_fails('Cb("yyy")', 'E492:')
let Cb = function('MyDictFunc', dict)
call assert_equal("hello/xxx/yyy", Cb("xxx", "yyy"))
call assert_fails('Cb("fff")', 'E492:')
let dict = {"tr": function('tr', ['hello', 'h', 'H'])}
call assert_equal("Hello", dict.tr())
endfunc
func Test_partial_implicit()
let dict = {'name': 'foo'}
func dict.MyFunc(arg) dict
return self.name . '/' . a:arg
endfunc
call assert_equal('foo/bar', dict.MyFunc('bar'))
call assert_fails('let func = dict.MyFunc', 'E704:')
let Func = dict.MyFunc
call assert_equal('foo/aaa', Func('aaa'))
let Func = function(dict.MyFunc, ['bbb'])
call assert_equal('foo/bbb', Func())
endfunc
fun InnerCall(funcref)
return a:funcref
endfu
fun OuterCall()
let opt = { 'func' : function('sin') }
call InnerCall(opt.func)
endfu
func Test_function_in_dict()
call OuterCall()
endfunc
function! s:cache_clear() dict
return self.name
endfunction
func Test_script_function_in_dict()
let s:obj = {'name': 'foo'}
let s:obj2 = {'name': 'bar'}
let s:obj['clear'] = function('s:cache_clear')
call assert_equal('foo', s:obj.clear())
let F = s:obj.clear
call assert_equal('foo', F())
call assert_equal('foo', call(s:obj.clear, [], s:obj))
call assert_equal('bar', call(s:obj.clear, [], s:obj2))
let s:obj2['clear'] = function('s:cache_clear')
call assert_equal('bar', s:obj2.clear())
let B = s:obj2.clear
call assert_equal('bar', B())
endfunc
function! s:cache_arg(arg) dict
let s:result = self.name . '/' . a:arg
return s:result
endfunction
func Test_script_function_in_dict_arg()
let s:obj = {'name': 'foo'}
let s:obj['clear'] = function('s:cache_arg')
call assert_equal('foo/bar', s:obj.clear('bar'))
let F = s:obj.clear
let s:result = ''
call assert_equal('foo/bar', F('bar'))
call assert_equal('foo/bar', s:result)
let s:obj['clear'] = function('s:cache_arg', ['bar'])
call assert_equal('foo/bar', s:obj.clear())
let s:result = ''
call s:obj.clear()
call assert_equal('foo/bar', s:result)
let F = s:obj.clear
call assert_equal('foo/bar', F())
let s:result = ''
call F()
call assert_equal('foo/bar', s:result)
call assert_equal('foo/bar', call(s:obj.clear, [], s:obj))
endfunc
func Test_partial_exists()
let F = function('MyFunc')
call assert_true(exists('*F'))
let lF = [F]
call assert_true(exists('*lF[0]'))
let F = function('MyFunc', ['arg'])
call assert_true(exists('*F'))
let lF = [F]
call assert_true(exists('*lF[0]'))
endfunc
func Test_partial_string()
let F = function('MyFunc')
call assert_equal("function('MyFunc')", string(F))
let F = function('MyFunc', ['foo'])
call assert_equal("function('MyFunc', ['foo'])", string(F))
let F = function('MyFunc', ['foo', 'bar'])
call assert_equal("function('MyFunc', ['foo', 'bar'])", string(F))
let d = {'one': 1}
let F = function('MyFunc', d)
call assert_equal("function('MyFunc', {'one': 1})", string(F))
let F = function('MyFunc', ['foo'], d)
call assert_equal("function('MyFunc', ['foo'], {'one': 1})", string(F))
endfunc
func Test_func_unref()
let obj = {}
function! obj.func() abort
endfunction
let funcnumber = matchstr(string(obj.func), '^function(''\zs.\{-}\ze''')
call assert_true(exists('*{' . funcnumber . '}'))
unlet obj
call assert_false(exists('*{' . funcnumber . '}'))
endfunc
func Test_tostring()
let d = {}
let d.d = d
function d.test3()
echo 42
endfunction
try
call string(d.test3)
catch
call assert_true(v:false, v:exception)
endtry
endfunc
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